Trail Running Calendar East of England 2026-2027

A guided morning trail run of about 10 km through bluebell carpeted woods in the Chiltern Hills near Tring. Participants are grouped by ability and led by run leaders; facilities include bag storage and a nearby cafe and dogs may join with..

Take on a coastal adventure with sandy trails and undulations in the Heritage Coast Run. Choose between a 10k or half marathon, both sharing a scenic, mostly off-road route. There's even a special 10k category for runners with dogs.

A guided 5 km spring trail run in the Chiltern Hills with a Movement Project session to develop mobility and trail technique, held at Church Farm Cafe in Aldbury with facilities and on-site parking.

A four person, four leg stage trail relay along the Roach Valley Way covering 23 miles in total. Teams navigate using maps and way markers with minimal marshals while the event raises funds for Havens Hospices.

A guided **10k** group trail run through High Lodge in Thetford Forest, led at a conversational pace on mostly flat woodland trails. The event allows two hours, has a £4 parking charge and an entry fee of £12.50.

Guided trail runs at High Lodge in Thetford Forest combine running on miles of woodland trails with facts about the forest and practical trail running tips. Routes include 10k and 16k options and events include both paid and free entries.

A mainly off road 15k trail run at Trifarm, Boreham on 06 May 2026 featuring an anticlockwise route on public footpaths and bridleways, on-site parking, water points and manual timing.

Nuclear Rush is a muddy obstacle race at the Secret Nuclear Bunker Estate in Essex featuring 6 km with 40 plus obstacles and 12 km with 70 plus obstacles, plus signature features such as the 20 foot Deathslide and multi lane zip wires.

A national OCR event at Nuclear Rush supported by British Obstacle Sports, the British OCR Championship runs a 12K plus route with 60 plus mandatory obstacles across mud, water and rugged terrain. It is chip timed, for 18 plus, and awards m..

A weekend of muddy obstacle races at the Secret Nuclear Bunker Estate in Essex, with distances from 1.5 km to 38+ km, signature obstacles like the Deathslide and zip lines, chip timing and on-site facilities.

A **5 km** run at Banham Zoo that passes animal enclosures, includes full-day zoo entry and a finisher medal, and raises funds for conservation; spectator tickets and fundraising prizes are available.

A Pretty Muddy 5k obstacle course at Norfolk Showground featuring climb, crawl and slide elements on a mostly flat route contained within the showground. Participants must be 13 or older and a minimum fundraising target of £50 applies.

A road marathon on scenic low traffic lanes around Halstead, marking its 30th running on 10 May 2026. The event is limited to 500 entries, is part of the Essex Road Running Championships and supports local charities.

Road marathon and half marathon from Suffolk Running Centre on measured Kirtling and Windmill routes. Aid stations every 10k, parking included and bespoke finisher medals; the event is cupless so bring your own bottle or cup.

An approximately 13 mile self guided loop around the Garden City Greenway starting and finishing at Standalone Farm, organised under UKA rules with a three hour time limit and proceeds donated to the charity GRIT.

A one day 30 km trail run in the Chiltern Hills near Tring with guided trail technique instruction, a well stocked checkpoint and a finisher's medal. The route runs through woodland, ridge lines and rolling hills with about 500 m ascent.

An inclusive UK trail running series offering 1K, 5K, 10K and kids races with free entry for under 16s, held at Dunstable Downs in May and Blaise Castle Estate in October 2026, with activities, food and live music.

A cross country event in Little Gaddesden on 10 May 2026 offering 10K, 5K and mini races for under 7s. Pre registration and on the day fees apply and medals are awarded to all finishers.

A self‑navigated trail event in Thaxted on 10 May 2026 raising funds for Thaxted Windmill restoration. Two route options are offered, 5 miles (8k) and 8.25 miles (13k), with entry fees and a refreshment voucher included.

A measured off-road 5K on 13 May 2026, Race 2 of the seven-race Crown to Crown series, run mainly on bridleways through Willow Park with limited parking and on-course safety support.